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TargetLibraryInfo.cpp
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//===-- TargetLibraryInfo.cpp - Runtime library information ----------------==//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the TargetLibraryInfo class.
//
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/ADT/Triple.h"
#include "llvm/IR/Constants.h"
#include "llvm/Support/CommandLine.h"
using namespace llvm;
static cl::opt<TargetLibraryInfoImpl::VectorLibrary> ClVectorLibrary(
"vector-library", cl::Hidden, cl::desc("Vector functions library"),
cl::init(TargetLibraryInfoImpl::NoLibrary),
cl::values(clEnumValN(TargetLibraryInfoImpl::NoLibrary, "none",
"No vector functions library"),
clEnumValN(TargetLibraryInfoImpl::Accelerate, "Accelerate",
"Accelerate framework"),
clEnumValN(TargetLibraryInfoImpl::SVML, "SVML",
"Intel SVML library")));
StringRef const TargetLibraryInfoImpl::StandardNames[LibFunc::NumLibFuncs] = {
#define TLI_DEFINE_STRING
#include "llvm/Analysis/TargetLibraryInfo.def"
};
static bool hasSinCosPiStret(const Triple &T) {
// Only Darwin variants have _stret versions of combined trig functions.
if (!T.isOSDarwin())
return false;
// The ABI is rather complicated on x86, so don't do anything special there.
if (T.getArch() == Triple::x86)
return false;
if (T.isMacOSX() && T.isMacOSXVersionLT(10, 9))
return false;
if (T.isiOS() && T.isOSVersionLT(7, 0))
return false;
return true;
}
/// initialize - Initialize the set of available library functions based on the
/// specified target triple. This should be carefully written so that a missing
/// target triple gets a sane set of defaults.
static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
ArrayRef<StringRef> StandardNames) {
// Verify that the StandardNames array is in alphabetical order.
assert(std::is_sorted(StandardNames.begin(), StandardNames.end(),
[](StringRef LHS, StringRef RHS) {
return LHS < RHS;
}) &&
"TargetLibraryInfoImpl function names must be sorted");
bool ShouldExtI32Param = false, ShouldExtI32Return = false,
ShouldSignExtI32Param = false;
// PowerPC64, Sparc64, SystemZ need signext/zeroext on i32 parameters and
// returns corresponding to C-level ints and unsigned ints.
if (T.getArch() == Triple::ppc64 || T.getArch() == Triple::ppc64le ||
T.getArch() == Triple::sparcv9 || T.getArch() == Triple::systemz) {
ShouldExtI32Param = true;
ShouldExtI32Return = true;
}
// Mips, on the other hand, needs signext on i32 parameters corresponding
// to both signed and unsigned ints.
if (T.getArch() == Triple::mips || T.getArch() == Triple::mipsel ||
T.getArch() == Triple::mips64 || T.getArch() == Triple::mips64el) {
ShouldSignExtI32Param = true;
}
TLI.setShouldExtI32Param(ShouldExtI32Param);
TLI.setShouldExtI32Return(ShouldExtI32Return);
TLI.setShouldSignExtI32Param(ShouldSignExtI32Param);
if (T.getArch() == Triple::r600 ||
T.getArch() == Triple::amdgcn) {
TLI.setUnavailable(LibFunc_ldexp);
TLI.setUnavailable(LibFunc_ldexpf);
TLI.setUnavailable(LibFunc_ldexpl);
TLI.setUnavailable(LibFunc_exp10);
TLI.setUnavailable(LibFunc_exp10f);
TLI.setUnavailable(LibFunc_exp10l);
TLI.setUnavailable(LibFunc_log10);
TLI.setUnavailable(LibFunc_log10f);
TLI.setUnavailable(LibFunc_log10l);
}
// There are no library implementations of mempcy and memset for AMD gpus and
// these can be difficult to lower in the backend.
if (T.getArch() == Triple::r600 ||
T.getArch() == Triple::amdgcn) {
TLI.setUnavailable(LibFunc_memcpy);
TLI.setUnavailable(LibFunc_memset);
TLI.setUnavailable(LibFunc_memset_pattern16);
return;
}
// memset_pattern16 is only available on iOS 3.0 and Mac OS X 10.5 and later.
// All versions of watchOS support it.
if (T.isMacOSX()) {
if (T.isMacOSXVersionLT(10, 5))
TLI.setUnavailable(LibFunc_memset_pattern16);
} else if (T.isiOS()) {
if (T.isOSVersionLT(3, 0))
TLI.setUnavailable(LibFunc_memset_pattern16);
} else if (!T.isWatchOS()) {
TLI.setUnavailable(LibFunc_memset_pattern16);
}
if (!hasSinCosPiStret(T)) {
TLI.setUnavailable(LibFunc_sinpi);
TLI.setUnavailable(LibFunc_sinpif);
TLI.setUnavailable(LibFunc_cospi);
TLI.setUnavailable(LibFunc_cospif);
TLI.setUnavailable(LibFunc_sincospi_stret);
TLI.setUnavailable(LibFunc_sincospif_stret);
}
if (T.isMacOSX() && T.getArch() == Triple::x86 &&
!T.isMacOSXVersionLT(10, 7)) {
// x86-32 OSX has a scheme where fwrite and fputs (and some other functions
// we don't care about) have two versions; on recent OSX, the one we want
// has a $UNIX2003 suffix. The two implementations are identical except
// for the return value in some edge cases. However, we don't want to
// generate code that depends on the old symbols.
TLI.setAvailableWithName(LibFunc_fwrite, "fwrite$UNIX2003");
TLI.setAvailableWithName(LibFunc_fputs, "fputs$UNIX2003");
}
// iprintf and friends are only available on XCore and TCE.
if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce) {
TLI.setUnavailable(LibFunc_iprintf);
TLI.setUnavailable(LibFunc_siprintf);
TLI.setUnavailable(LibFunc_fiprintf);
}
if (T.isOSWindows() && !T.isOSCygMing()) {
// Win32 does not support long double
TLI.setUnavailable(LibFunc_acosl);
TLI.setUnavailable(LibFunc_asinl);
TLI.setUnavailable(LibFunc_atanl);
TLI.setUnavailable(LibFunc_atan2l);
TLI.setUnavailable(LibFunc_ceill);
TLI.setUnavailable(LibFunc_copysignl);
TLI.setUnavailable(LibFunc_cosl);
TLI.setUnavailable(LibFunc_coshl);
TLI.setUnavailable(LibFunc_expl);
TLI.setUnavailable(LibFunc_fabsf); // Win32 and Win64 both lack fabsf
TLI.setUnavailable(LibFunc_fabsl);
TLI.setUnavailable(LibFunc_floorl);
TLI.setUnavailable(LibFunc_fmaxl);
TLI.setUnavailable(LibFunc_fminl);
TLI.setUnavailable(LibFunc_fmodl);
TLI.setUnavailable(LibFunc_frexpl);
TLI.setUnavailable(LibFunc_ldexpf);
TLI.setUnavailable(LibFunc_ldexpl);
TLI.setUnavailable(LibFunc_logl);
TLI.setUnavailable(LibFunc_modfl);
TLI.setUnavailable(LibFunc_powl);
TLI.setUnavailable(LibFunc_sinl);
TLI.setUnavailable(LibFunc_sinhl);
TLI.setUnavailable(LibFunc_sqrtl);
TLI.setUnavailable(LibFunc_tanl);
TLI.setUnavailable(LibFunc_tanhl);
// Win32 only has C89 math
TLI.setUnavailable(LibFunc_acosh);
TLI.setUnavailable(LibFunc_acoshf);
TLI.setUnavailable(LibFunc_acoshl);
TLI.setUnavailable(LibFunc_asinh);
TLI.setUnavailable(LibFunc_asinhf);
TLI.setUnavailable(LibFunc_asinhl);
TLI.setUnavailable(LibFunc_atanh);
TLI.setUnavailable(LibFunc_atanhf);
TLI.setUnavailable(LibFunc_atanhl);
TLI.setUnavailable(LibFunc_cbrt);
TLI.setUnavailable(LibFunc_cbrtf);
TLI.setUnavailable(LibFunc_cbrtl);
TLI.setUnavailable(LibFunc_exp2);
TLI.setUnavailable(LibFunc_exp2f);
TLI.setUnavailable(LibFunc_exp2l);
TLI.setUnavailable(LibFunc_expm1);
TLI.setUnavailable(LibFunc_expm1f);
TLI.setUnavailable(LibFunc_expm1l);
TLI.setUnavailable(LibFunc_log2);
TLI.setUnavailable(LibFunc_log2f);
TLI.setUnavailable(LibFunc_log2l);
TLI.setUnavailable(LibFunc_log1p);
TLI.setUnavailable(LibFunc_log1pf);
TLI.setUnavailable(LibFunc_log1pl);
TLI.setUnavailable(LibFunc_logb);
TLI.setUnavailable(LibFunc_logbf);
TLI.setUnavailable(LibFunc_logbl);
TLI.setUnavailable(LibFunc_nearbyint);
TLI.setUnavailable(LibFunc_nearbyintf);
TLI.setUnavailable(LibFunc_nearbyintl);
TLI.setUnavailable(LibFunc_rint);
TLI.setUnavailable(LibFunc_rintf);
TLI.setUnavailable(LibFunc_rintl);
TLI.setUnavailable(LibFunc_round);
TLI.setUnavailable(LibFunc_roundf);
TLI.setUnavailable(LibFunc_roundl);
TLI.setUnavailable(LibFunc_trunc);
TLI.setUnavailable(LibFunc_truncf);
TLI.setUnavailable(LibFunc_truncl);
// Win32 provides some C99 math with mangled names
TLI.setAvailableWithName(LibFunc_copysign, "_copysign");
if (T.getArch() == Triple::x86) {
// Win32 on x86 implements single-precision math functions as macros
TLI.setUnavailable(LibFunc_acosf);
TLI.setUnavailable(LibFunc_asinf);
TLI.setUnavailable(LibFunc_atanf);
TLI.setUnavailable(LibFunc_atan2f);
TLI.setUnavailable(LibFunc_ceilf);
TLI.setUnavailable(LibFunc_copysignf);
TLI.setUnavailable(LibFunc_cosf);
TLI.setUnavailable(LibFunc_coshf);
TLI.setUnavailable(LibFunc_expf);
TLI.setUnavailable(LibFunc_floorf);
TLI.setUnavailable(LibFunc_fminf);
TLI.setUnavailable(LibFunc_fmaxf);
TLI.setUnavailable(LibFunc_fmodf);
TLI.setUnavailable(LibFunc_logf);
TLI.setUnavailable(LibFunc_log10f);
TLI.setUnavailable(LibFunc_modff);
TLI.setUnavailable(LibFunc_powf);
TLI.setUnavailable(LibFunc_sinf);
TLI.setUnavailable(LibFunc_sinhf);
TLI.setUnavailable(LibFunc_sqrtf);
TLI.setUnavailable(LibFunc_tanf);
TLI.setUnavailable(LibFunc_tanhf);
}
// These definitions are due to math-finite.h header on Linux
TLI.setUnavailable(LibFunc_acos_finite);
TLI.setUnavailable(LibFunc_acosf_finite);
TLI.setUnavailable(LibFunc_acosl_finite);
TLI.setUnavailable(LibFunc_acosh_finite);
TLI.setUnavailable(LibFunc_acoshf_finite);
TLI.setUnavailable(LibFunc_acoshl_finite);
TLI.setUnavailable(LibFunc_asin_finite);
TLI.setUnavailable(LibFunc_asinf_finite);
TLI.setUnavailable(LibFunc_asinl_finite);
TLI.setUnavailable(LibFunc_atan2_finite);
TLI.setUnavailable(LibFunc_atan2f_finite);
TLI.setUnavailable(LibFunc_atan2l_finite);
TLI.setUnavailable(LibFunc_atanh_finite);
TLI.setUnavailable(LibFunc_atanhf_finite);
TLI.setUnavailable(LibFunc_atanhl_finite);
TLI.setUnavailable(LibFunc_cosh_finite);
TLI.setUnavailable(LibFunc_coshf_finite);
TLI.setUnavailable(LibFunc_coshl_finite);
TLI.setUnavailable(LibFunc_exp10_finite);
TLI.setUnavailable(LibFunc_exp10f_finite);
TLI.setUnavailable(LibFunc_exp10l_finite);
TLI.setUnavailable(LibFunc_exp2_finite);
TLI.setUnavailable(LibFunc_exp2f_finite);
TLI.setUnavailable(LibFunc_exp2l_finite);
TLI.setUnavailable(LibFunc_exp_finite);
TLI.setUnavailable(LibFunc_expf_finite);
TLI.setUnavailable(LibFunc_expl_finite);
TLI.setUnavailable(LibFunc_log10_finite);
TLI.setUnavailable(LibFunc_log10f_finite);
TLI.setUnavailable(LibFunc_log10l_finite);
TLI.setUnavailable(LibFunc_log2_finite);
TLI.setUnavailable(LibFunc_log2f_finite);
TLI.setUnavailable(LibFunc_log2l_finite);
TLI.setUnavailable(LibFunc_log_finite);
TLI.setUnavailable(LibFunc_logf_finite);
TLI.setUnavailable(LibFunc_logl_finite);
TLI.setUnavailable(LibFunc_pow_finite);
TLI.setUnavailable(LibFunc_powf_finite);
TLI.setUnavailable(LibFunc_powl_finite);
TLI.setUnavailable(LibFunc_sinh_finite);
TLI.setUnavailable(LibFunc_sinhf_finite);
TLI.setUnavailable(LibFunc_sinhl_finite);
// Win32 does *not* provide provide these functions, but they are
// generally available on POSIX-compliant systems:
TLI.setUnavailable(LibFunc_access);
TLI.setUnavailable(LibFunc_bcmp);
TLI.setUnavailable(LibFunc_bcopy);
TLI.setUnavailable(LibFunc_bzero);
TLI.setUnavailable(LibFunc_chmod);
TLI.setUnavailable(LibFunc_chown);
TLI.setUnavailable(LibFunc_closedir);
TLI.setUnavailable(LibFunc_ctermid);
TLI.setUnavailable(LibFunc_fdopen);
TLI.setUnavailable(LibFunc_ffs);
TLI.setUnavailable(LibFunc_fileno);
TLI.setUnavailable(LibFunc_flockfile);
TLI.setUnavailable(LibFunc_fseeko);
TLI.setUnavailable(LibFunc_fstat);
TLI.setUnavailable(LibFunc_fstatvfs);
TLI.setUnavailable(LibFunc_ftello);
TLI.setUnavailable(LibFunc_ftrylockfile);
TLI.setUnavailable(LibFunc_funlockfile);
TLI.setUnavailable(LibFunc_getc_unlocked);
TLI.setUnavailable(LibFunc_getitimer);
TLI.setUnavailable(LibFunc_getlogin_r);
TLI.setUnavailable(LibFunc_getpwnam);
TLI.setUnavailable(LibFunc_gettimeofday);
TLI.setUnavailable(LibFunc_htonl);
TLI.setUnavailable(LibFunc_htons);
TLI.setUnavailable(LibFunc_lchown);
TLI.setUnavailable(LibFunc_lstat);
TLI.setUnavailable(LibFunc_memccpy);
TLI.setUnavailable(LibFunc_mkdir);
TLI.setUnavailable(LibFunc_ntohl);
TLI.setUnavailable(LibFunc_ntohs);
TLI.setUnavailable(LibFunc_open);
TLI.setUnavailable(LibFunc_opendir);
TLI.setUnavailable(LibFunc_pclose);
TLI.setUnavailable(LibFunc_popen);
TLI.setUnavailable(LibFunc_pread);
TLI.setUnavailable(LibFunc_pwrite);
TLI.setUnavailable(LibFunc_read);
TLI.setUnavailable(LibFunc_readlink);
TLI.setUnavailable(LibFunc_realpath);
TLI.setUnavailable(LibFunc_rmdir);
TLI.setUnavailable(LibFunc_setitimer);
TLI.setUnavailable(LibFunc_stat);
TLI.setUnavailable(LibFunc_statvfs);
TLI.setUnavailable(LibFunc_stpcpy);
TLI.setUnavailable(LibFunc_stpncpy);
TLI.setUnavailable(LibFunc_strcasecmp);
TLI.setUnavailable(LibFunc_strncasecmp);
TLI.setUnavailable(LibFunc_times);
TLI.setUnavailable(LibFunc_uname);
TLI.setUnavailable(LibFunc_unlink);
TLI.setUnavailable(LibFunc_unsetenv);
TLI.setUnavailable(LibFunc_utime);
TLI.setUnavailable(LibFunc_utimes);
TLI.setUnavailable(LibFunc_write);
// Win32 does *not* provide provide these functions, but they are
// specified by C99:
TLI.setUnavailable(LibFunc_atoll);
TLI.setUnavailable(LibFunc_frexpf);
TLI.setUnavailable(LibFunc_llabs);
}
switch (T.getOS()) {
case Triple::MacOSX:
// exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
// and their names are __exp10 and __exp10f. exp10l is not available on
// OS X or iOS.
TLI.setUnavailable(LibFunc_exp10l);
if (T.isMacOSXVersionLT(10, 9)) {
TLI.setUnavailable(LibFunc_exp10);
TLI.setUnavailable(LibFunc_exp10f);
} else {
TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
}
break;
case Triple::IOS:
case Triple::TvOS:
case Triple::WatchOS:
TLI.setUnavailable(LibFunc_exp10l);
if (!T.isWatchOS() && (T.isOSVersionLT(7, 0) ||
(T.isOSVersionLT(9, 0) &&
(T.getArch() == Triple::x86 ||
T.getArch() == Triple::x86_64)))) {
TLI.setUnavailable(LibFunc_exp10);
TLI.setUnavailable(LibFunc_exp10f);
} else {
TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
}
break;
case Triple::Linux:
// exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
// buggy prior to glibc version 2.18. Until this version is widely deployed
// or we have a reasonable detection strategy, we cannot use exp10 reliably
// on Linux.
//
// Fall through to disable all of them.
LLVM_FALLTHROUGH;
default:
TLI.setUnavailable(LibFunc_exp10);
TLI.setUnavailable(LibFunc_exp10f);
TLI.setUnavailable(LibFunc_exp10l);
}
// ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
// Linux (GLIBC):
// http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
// http://svn.freebsd.org/base/head/lib/libc/string/ffsl.c
// http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
switch (T.getOS()) {
case Triple::Darwin:
case Triple::MacOSX:
case Triple::IOS:
case Triple::TvOS:
case Triple::WatchOS:
case Triple::FreeBSD:
case Triple::Linux:
break;
default:
TLI.setUnavailable(LibFunc_ffsl);
}
// ffsll is available on at least FreeBSD and Linux (GLIBC):
// http://svn.freebsd.org/base/head/lib/libc/string/ffsll.c
// http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
switch (T.getOS()) {
case Triple::Darwin:
case Triple::MacOSX:
case Triple::IOS:
case Triple::TvOS:
case Triple::WatchOS:
case Triple::FreeBSD:
case Triple::Linux:
break;
default:
TLI.setUnavailable(LibFunc_ffsll);
}
// The following functions are available on at least FreeBSD:
// http://svn.freebsd.org/base/head/lib/libc/string/fls.c
// http://svn.freebsd.org/base/head/lib/libc/string/flsl.c
// http://svn.freebsd.org/base/head/lib/libc/string/flsll.c
if (!T.isOSFreeBSD()) {
TLI.setUnavailable(LibFunc_fls);
TLI.setUnavailable(LibFunc_flsl);
TLI.setUnavailable(LibFunc_flsll);
}
// The following functions are available on at least Linux:
if (!T.isOSLinux()) {
TLI.setUnavailable(LibFunc_dunder_strdup);
TLI.setUnavailable(LibFunc_dunder_strtok_r);
TLI.setUnavailable(LibFunc_dunder_isoc99_scanf);
TLI.setUnavailable(LibFunc_dunder_isoc99_sscanf);
TLI.setUnavailable(LibFunc_under_IO_getc);
TLI.setUnavailable(LibFunc_under_IO_putc);
TLI.setUnavailable(LibFunc_memalign);
TLI.setUnavailable(LibFunc_fopen64);
TLI.setUnavailable(LibFunc_fseeko64);
TLI.setUnavailable(LibFunc_fstat64);
TLI.setUnavailable(LibFunc_fstatvfs64);
TLI.setUnavailable(LibFunc_ftello64);
TLI.setUnavailable(LibFunc_lstat64);
TLI.setUnavailable(LibFunc_open64);
TLI.setUnavailable(LibFunc_stat64);
TLI.setUnavailable(LibFunc_statvfs64);
TLI.setUnavailable(LibFunc_tmpfile64);
}
// As currently implemented in clang, NVPTX code has no standard library to
// speak of. Headers provide a standard-ish library implementation, but many
// of the signatures are wrong -- for example, many libm functions are not
// extern "C".
//
// libdevice, an IR library provided by nvidia, is linked in by the front-end,
// but only used functions are provided to llvm. Moreover, most of the
// functions in libdevice don't map precisely to standard library functions.
//
// FIXME: Having no standard library prevents e.g. many fastmath
// optimizations, so this situation should be fixed.
if (T.isNVPTX()) {
TLI.disableAllFunctions();
TLI.setAvailable(LibFunc_nvvm_reflect);
} else {
TLI.setUnavailable(LibFunc_nvvm_reflect);
}
TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary);
}
TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
// Default to everything being available.
memset(AvailableArray, -1, sizeof(AvailableArray));
initialize(*this, Triple(), StandardNames);
}
TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
// Default to everything being available.
memset(AvailableArray, -1, sizeof(AvailableArray));
initialize(*this, T, StandardNames);
}
TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
: CustomNames(TLI.CustomNames), ShouldExtI32Param(TLI.ShouldExtI32Param),
ShouldExtI32Return(TLI.ShouldExtI32Return),
ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
VectorDescs = TLI.VectorDescs;
ScalarDescs = TLI.ScalarDescs;
}
TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
: CustomNames(std::move(TLI.CustomNames)),
ShouldExtI32Param(TLI.ShouldExtI32Param),
ShouldExtI32Return(TLI.ShouldExtI32Return),
ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
AvailableArray);
VectorDescs = TLI.VectorDescs;
ScalarDescs = TLI.ScalarDescs;
}
TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
CustomNames = TLI.CustomNames;
ShouldExtI32Param = TLI.ShouldExtI32Param;
ShouldExtI32Return = TLI.ShouldExtI32Return;
ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
return *this;
}
TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
CustomNames = std::move(TLI.CustomNames);
ShouldExtI32Param = TLI.ShouldExtI32Param;
ShouldExtI32Return = TLI.ShouldExtI32Return;
ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
AvailableArray);
return *this;
}
static StringRef sanitizeFunctionName(StringRef funcName) {
// Filter out empty names and names containing null bytes, those can't be in
// our table.
if (funcName.empty() || funcName.find('\0') != StringRef::npos)
return StringRef();
// Check for \01 prefix that is used to mangle __asm declarations and
// strip it if present.
return GlobalValue::dropLLVMManglingEscape(funcName);
}
bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName,
LibFunc &F) const {
StringRef const *Start = &StandardNames[0];
StringRef const *End = &StandardNames[NumLibFuncs];
funcName = sanitizeFunctionName(funcName);
if (funcName.empty())
return false;
StringRef const *I = std::lower_bound(
Start, End, funcName, [](StringRef LHS, StringRef RHS) {
return LHS < RHS;
});
if (I != End && *I == funcName) {
F = (LibFunc)(I - Start);
return true;
}
return false;
}
bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
LibFunc F,
const DataLayout *DL) const {
LLVMContext &Ctx = FTy.getContext();
Type *PCharTy = Type::getInt8PtrTy(Ctx);
Type *SizeTTy = DL ? DL->getIntPtrType(Ctx, /*AS=*/0) : nullptr;
auto IsSizeTTy = [SizeTTy](Type *Ty) {
return SizeTTy ? Ty == SizeTTy : Ty->isIntegerTy();
};
unsigned NumParams = FTy.getNumParams();
switch (F) {
case LibFunc_strlen:
return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
FTy.getReturnType()->isIntegerTy());
case LibFunc_strchr:
case LibFunc_strrchr:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0) == FTy.getReturnType() &&
FTy.getParamType(1)->isIntegerTy());
case LibFunc_strtol:
case LibFunc_strtod:
case LibFunc_strtof:
case LibFunc_strtoul:
case LibFunc_strtoll:
case LibFunc_strtold:
case LibFunc_strtoull:
return ((NumParams == 2 || NumParams == 3) &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_strcat:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0) == FTy.getReturnType() &&
FTy.getParamType(1) == FTy.getReturnType());
case LibFunc_strncat:
return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0) == FTy.getReturnType() &&
FTy.getParamType(1) == FTy.getReturnType() &&
FTy.getParamType(2)->isIntegerTy());
case LibFunc_strcpy_chk:
case LibFunc_stpcpy_chk:
--NumParams;
if (!IsSizeTTy(FTy.getParamType(NumParams)))
return false;
LLVM_FALLTHROUGH;
case LibFunc_strcpy:
case LibFunc_stpcpy:
return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(0) &&
FTy.getParamType(0) == FTy.getParamType(1) &&
FTy.getParamType(0) == PCharTy);
case LibFunc_strncpy_chk:
case LibFunc_stpncpy_chk:
--NumParams;
if (!IsSizeTTy(FTy.getParamType(NumParams)))
return false;
LLVM_FALLTHROUGH;
case LibFunc_strncpy:
case LibFunc_stpncpy:
return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
FTy.getParamType(0) == FTy.getParamType(1) &&
FTy.getParamType(0) == PCharTy &&
FTy.getParamType(2)->isIntegerTy());
case LibFunc_strxfrm:
return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_strcmp:
return (NumParams == 2 && FTy.getReturnType()->isIntegerTy(32) &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(0) == FTy.getParamType(1));
case LibFunc_strncmp:
return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(0) == FTy.getParamType(1) &&
FTy.getParamType(2)->isIntegerTy());
case LibFunc_strspn:
case LibFunc_strcspn:
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(0) == FTy.getParamType(1) &&
FTy.getReturnType()->isIntegerTy());
case LibFunc_strcoll:
case LibFunc_strcasecmp:
case LibFunc_strncasecmp:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_strstr:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_strpbrk:
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getReturnType() == FTy.getParamType(0) &&
FTy.getParamType(0) == FTy.getParamType(1));
case LibFunc_strtok:
case LibFunc_strtok_r:
return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_scanf:
case LibFunc_setbuf:
case LibFunc_setvbuf:
return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
case LibFunc_strdup:
case LibFunc_strndup:
return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0)->isPointerTy());
case LibFunc_sscanf:
case LibFunc_stat:
case LibFunc_statvfs:
case LibFunc_siprintf:
case LibFunc_sprintf:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_snprintf:
return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(2)->isPointerTy());
case LibFunc_setitimer:
return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
FTy.getParamType(2)->isPointerTy());
case LibFunc_system:
return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
case LibFunc_malloc:
return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
case LibFunc_memcmp:
return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_memchr:
case LibFunc_memrchr:
return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
FTy.getReturnType() == FTy.getParamType(0) &&
FTy.getParamType(1)->isIntegerTy(32) &&
IsSizeTTy(FTy.getParamType(2)));
case LibFunc_modf:
case LibFunc_modff:
case LibFunc_modfl:
return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_memcpy_chk:
case LibFunc_memmove_chk:
--NumParams;
if (!IsSizeTTy(FTy.getParamType(NumParams)))
return false;
LLVM_FALLTHROUGH;
case LibFunc_memcpy:
case LibFunc_mempcpy:
case LibFunc_memmove:
return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy() &&
IsSizeTTy(FTy.getParamType(2)));
case LibFunc_memset_chk:
--NumParams;
if (!IsSizeTTy(FTy.getParamType(NumParams)))
return false;
LLVM_FALLTHROUGH;
case LibFunc_memset:
return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isIntegerTy() &&
IsSizeTTy(FTy.getParamType(2)));
case LibFunc_memccpy:
return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_memalign:
return (FTy.getReturnType()->isPointerTy());
case LibFunc_realloc:
case LibFunc_reallocf:
return (NumParams == 2 && FTy.getReturnType() == PCharTy &&
FTy.getParamType(0) == FTy.getReturnType() &&
IsSizeTTy(FTy.getParamType(1)));
case LibFunc_read:
return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
case LibFunc_rewind:
case LibFunc_rmdir:
case LibFunc_remove:
case LibFunc_realpath:
return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
case LibFunc_rename:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_readlink:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_write:
return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
case LibFunc_bcopy:
case LibFunc_bcmp:
return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_bzero:
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
case LibFunc_calloc:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
case LibFunc_atof:
case LibFunc_atoi:
case LibFunc_atol:
case LibFunc_atoll:
case LibFunc_ferror:
case LibFunc_getenv:
case LibFunc_getpwnam:
case LibFunc_iprintf:
case LibFunc_pclose:
case LibFunc_perror:
case LibFunc_printf:
case LibFunc_puts:
case LibFunc_uname:
case LibFunc_under_IO_getc:
case LibFunc_unlink:
case LibFunc_unsetenv:
return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
case LibFunc_access:
case LibFunc_chmod:
case LibFunc_chown:
case LibFunc_clearerr:
case LibFunc_closedir:
case LibFunc_ctermid:
case LibFunc_fclose:
case LibFunc_feof:
case LibFunc_fflush:
case LibFunc_fgetc:
case LibFunc_fileno:
case LibFunc_flockfile:
case LibFunc_free:
case LibFunc_fseek:
case LibFunc_fseeko64:
case LibFunc_fseeko:
case LibFunc_fsetpos:
case LibFunc_ftell:
case LibFunc_ftello64:
case LibFunc_ftello:
case LibFunc_ftrylockfile:
case LibFunc_funlockfile:
case LibFunc_getc:
case LibFunc_getc_unlocked:
case LibFunc_getlogin_r:
case LibFunc_mkdir:
case LibFunc_mktime:
case LibFunc_times:
return (NumParams != 0 && FTy.getParamType(0)->isPointerTy());
case LibFunc_fopen:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_fdopen:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_fputc:
case LibFunc_fstat:
case LibFunc_frexp:
case LibFunc_frexpf:
case LibFunc_frexpl:
case LibFunc_fstatvfs:
return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_fgets:
return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(2)->isPointerTy());
case LibFunc_fread:
return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(3)->isPointerTy());
case LibFunc_fwrite:
return (NumParams == 4 && FTy.getReturnType()->isIntegerTy() &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isIntegerTy() &&
FTy.getParamType(2)->isIntegerTy() &&
FTy.getParamType(3)->isPointerTy());
case LibFunc_fputs:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_fscanf:
case LibFunc_fiprintf:
case LibFunc_fprintf:
return (NumParams >= 2 && FTy.getReturnType()->isIntegerTy() &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_fgetpos:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_getchar:
return (NumParams == 0 && FTy.getReturnType()->isIntegerTy());
case LibFunc_gets:
return (NumParams == 1 && FTy.getParamType(0) == PCharTy);
case LibFunc_getitimer:
return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_ungetc:
return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_utime:
case LibFunc_utimes:
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_putc:
return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_pread:
case LibFunc_pwrite:
return (NumParams == 4 && FTy.getParamType(1)->isPointerTy());
case LibFunc_popen:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_vscanf:
return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_vsscanf:
return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
FTy.getParamType(2)->isPointerTy());
case LibFunc_vfscanf:
return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
FTy.getParamType(2)->isPointerTy());
case LibFunc_valloc:
return (FTy.getReturnType()->isPointerTy());
case LibFunc_vprintf:
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
case LibFunc_vfprintf:
case LibFunc_vsprintf:
return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_vsnprintf:
return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(2)->isPointerTy());
case LibFunc_open:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
case LibFunc_opendir:
return (NumParams == 1 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0)->isPointerTy());
case LibFunc_tmpfile:
return (FTy.getReturnType()->isPointerTy());
case LibFunc_htonl:
case LibFunc_ntohl:
return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
FTy.getReturnType() == FTy.getParamType(0));
case LibFunc_htons:
case LibFunc_ntohs:
return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(16) &&
FTy.getReturnType() == FTy.getParamType(0));
case LibFunc_lstat:
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_lchown:
return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
case LibFunc_qsort:
return (NumParams == 4 && FTy.getParamType(3)->isPointerTy());
case LibFunc_dunder_strdup:
case LibFunc_dunder_strndup:
return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0)->isPointerTy());
case LibFunc_dunder_strtok_r:
return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
case LibFunc_under_IO_putc:
return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_dunder_isoc99_scanf:
return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
case LibFunc_stat64:
case LibFunc_lstat64:
case LibFunc_statvfs64:
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_dunder_isoc99_sscanf:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_fopen64:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_tmpfile64:
return (FTy.getReturnType()->isPointerTy());
case LibFunc_fstat64:
case LibFunc_fstatvfs64:
return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_open64:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
case LibFunc_gettimeofday:
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
// new(unsigned int);
case LibFunc_Znwj:
// new(unsigned long);
case LibFunc_Znwm:
// new[](unsigned int);
case LibFunc_Znaj:
// new[](unsigned long);
case LibFunc_Znam:
// new(unsigned int);
case LibFunc_msvc_new_int:
// new(unsigned long long);
case LibFunc_msvc_new_longlong:
// new[](unsigned int);
case LibFunc_msvc_new_array_int:
// new[](unsigned long long);
case LibFunc_msvc_new_array_longlong:
return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
// new(unsigned int, nothrow);
case LibFunc_ZnwjRKSt9nothrow_t:
// new(unsigned long, nothrow);
case LibFunc_ZnwmRKSt9nothrow_t:
// new[](unsigned int, nothrow);
case LibFunc_ZnajRKSt9nothrow_t:
// new[](unsigned long, nothrow);
case LibFunc_ZnamRKSt9nothrow_t:
// new(unsigned int, nothrow);
case LibFunc_msvc_new_int_nothrow:
// new(unsigned long long, nothrow);
case LibFunc_msvc_new_longlong_nothrow:
// new[](unsigned int, nothrow);
case LibFunc_msvc_new_array_int_nothrow:
// new[](unsigned long long, nothrow);
case LibFunc_msvc_new_array_longlong_nothrow:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
// void operator delete[](void*);
case LibFunc_ZdaPv:
// void operator delete(void*);
case LibFunc_ZdlPv:
// void operator delete[](void*);
case LibFunc_msvc_delete_array_ptr32:
// void operator delete[](void*);
case LibFunc_msvc_delete_array_ptr64:
// void operator delete(void*);
case LibFunc_msvc_delete_ptr32: